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path: root/drivers/cxl/core
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Diffstat (limited to 'drivers/cxl/core')
-rw-r--r--drivers/cxl/core/cdat.c17
-rw-r--r--drivers/cxl/core/pmem.c6
-rw-r--r--drivers/cxl/core/port.c4
3 files changed, 16 insertions, 11 deletions
diff --git a/drivers/cxl/core/cdat.c b/drivers/cxl/core/cdat.c
index cd84d87f597a..0df5379cf02f 100644
--- a/drivers/cxl/core/cdat.c
+++ b/drivers/cxl/core/cdat.c
@@ -162,7 +162,6 @@ static int cxl_port_perf_data_calculate(struct cxl_port *port,
struct xarray *dsmas_xa)
{
struct access_coordinate c;
- struct cxl_port *root_port;
struct cxl_root *cxl_root;
struct dsmas_entry *dent;
int valid_entries = 0;
@@ -175,8 +174,7 @@ static int cxl_port_perf_data_calculate(struct cxl_port *port,
return rc;
}
- root_port = find_cxl_root(port);
- cxl_root = to_cxl_root(root_port);
+ cxl_root = find_cxl_root(port);
if (!cxl_root->ops || !cxl_root->ops->qos_class)
return -EOPNOTSUPP;
@@ -193,7 +191,8 @@ static int cxl_port_perf_data_calculate(struct cxl_port *port,
dent->coord.write_bandwidth);
dent->entries = 1;
- rc = cxl_root->ops->qos_class(root_port, &dent->coord, 1, &qos_class);
+ rc = cxl_root->ops->qos_class(cxl_root, &dent->coord, 1,
+ &qos_class);
if (rc != 1)
continue;
@@ -349,15 +348,19 @@ static int cxl_qos_class_verify(struct cxl_memdev *cxlmd)
{
struct cxl_dev_state *cxlds = cxlmd->cxlds;
struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlds);
- struct cxl_port *root_port __free(put_device) = NULL;
LIST_HEAD(__discard);
struct list_head *discard __free(dpa_perf) = &__discard;
+ struct cxl_port *root_port;
int rc;
- root_port = find_cxl_root(cxlmd->endpoint);
- if (!root_port)
+ struct cxl_root *cxl_root __free(put_cxl_root) =
+ find_cxl_root(cxlmd->endpoint);
+
+ if (!cxl_root)
return -ENODEV;
+ root_port = &cxl_root->port;
+
/* Check that the QTG IDs are all sane between end device and root decoders */
cxl_qos_match(root_port, &mds->ram_perf_list, discard);
cxl_qos_match(root_port, &mds->pmem_perf_list, discard);
diff --git a/drivers/cxl/core/pmem.c b/drivers/cxl/core/pmem.c
index fc94f5240327..da92a901b9e8 100644
--- a/drivers/cxl/core/pmem.c
+++ b/drivers/cxl/core/pmem.c
@@ -64,12 +64,14 @@ static int match_nvdimm_bridge(struct device *dev, void *data)
struct cxl_nvdimm_bridge *cxl_find_nvdimm_bridge(struct cxl_memdev *cxlmd)
{
- struct cxl_port *port = find_cxl_root(cxlmd->endpoint);
+ struct cxl_root *cxl_root = find_cxl_root(cxlmd->endpoint);
+ struct cxl_port *port;
struct device *dev;
- if (!port)
+ if (!cxl_root)
return NULL;
+ port = &cxl_root->port;
dev = device_find_child(&port->dev, NULL, match_nvdimm_bridge);
put_device(&port->dev);
diff --git a/drivers/cxl/core/port.c b/drivers/cxl/core/port.c
index 64f30d5fe1f6..63a4e3c2baed 100644
--- a/drivers/cxl/core/port.c
+++ b/drivers/cxl/core/port.c
@@ -972,7 +972,7 @@ static bool dev_is_cxl_root_child(struct device *dev)
return false;
}
-struct cxl_port *find_cxl_root(struct cxl_port *port)
+struct cxl_root *find_cxl_root(struct cxl_port *port)
{
struct cxl_port *iter = port;
@@ -982,7 +982,7 @@ struct cxl_port *find_cxl_root(struct cxl_port *port)
if (!iter)
return NULL;
get_device(&iter->dev);
- return iter;
+ return to_cxl_root(iter);
}
EXPORT_SYMBOL_NS_GPL(find_cxl_root, CXL);